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Dust cup set (optional accessory)
Hammer drilling operation
NOTICE: If you purchase the dust cup set as
optional accessory, the standard side grip cannot
be used with the dust cup set being installed on
the tool. When the dust cup set is installed on the
tool, remove the grip from the standard side grip, and
then attach it to the optional grip base set.
► Fig.12: 1. Bolt 2. Grip 3. Optional grip base set
CAUTION: There is tremendous and sudden
twisting force exerted on the tool/drill bit at the time of
hole break-through, when the hole becomes clogged
with chips and particles, or when striking reinforcing
rods embedded in the concrete. Always use the side
grip (auxiliary handle) and firmly hold the tool by
both side grip and switch handle during opera-
tions. Failure to do so may result in the loss of control
of the tool and potentially severe injury.
NOTICE: Do not use the dust cup set when drill-
ing in metal or similar. It may damage the dust cup
set due to the heat produced by small metal dust or
similar. Do not install or remove the dust cup set with
the drill bit installed in the tool. It may damage the
dust cup set and cause dust leak.
Set the action mode changing knob to the
symbol.
Position the drill bit at the desired location for the hole,
then pull the switch trigger. Do not force the tool. Light
pressure gives best results. Keep the tool in position
and prevent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at
an idle, then remove the drill bit partially from the hole.
By repeating this several times, the hole will be cleaned
out and normal drilling may be resumed.
Before installing the dust cup set, remove the bit from
the tool if installed.
Install the spacer so that the grooves on the spacer fit
in the protrusions on the tool barrel while widening it.
Be careful for the spring not to come off from the slit of
spacer.
► Fig.13: 1. Spacer 2. Spring
► Fig.14
NOTE: Eccentricity in the drill bit rotation may occur
while operating the tool with no load. The tool auto-
matically centers itself during operation. This does not
affect the drilling precision.
Drilling in wood or metal
Install the side grip (optional grip base set and the grip
removed from standard side grip) so that the groove on
the grip fit in the protrusion on the spacer. Turn the grip
clockwise to secure it.
► Fig.15: 1. Side grip
Install the dust cup set so that the claws of the dust cup
fit in in the slits on the spacer.
► Fig.16: 1. Dust cup 2. Claw
CAUTION: Hold the tool firmly and exert care
when the drill bit begins to break through the
workpiece. There is a tremendous force exerted on
the tool/drill bit at the time of hole break through.
NOTE: If you connect a vacuum cleaner to the dust
cup set, remove the dust cap before connecting it.
► Fig.17: 1. Dust cap
CAUTION: A stuck drill bit can be removed
simply by setting the reversing switch to reverse
rotation in order to back out. However, the tool
may back out abruptly if you do not hold it firmly.
CAUTION: Always secure workpieces in a
vise or similar hold-down device.
To remove the drill bit, pull the chuck cover down all the
way and pull the drill bit out.
► Fig.18: 1. Bit 2. Chuck cover
To remove the dust cup set, hold the root of dust cup
and pull it out.
► Fig.19
NOTICE: Never use “rotation with hammering”
when the drill chuck is installed on the tool. The
drill chuck may be damaged.
Also, the drill chuck will come off when reversing the
tool.
NOTE: If the cap comes off from the dust cup, attach
it with its printed side facing up so that groove on the
cap fits in the inside periphery of the attachment.
► Fig.20
NOTICE: Pressing excessively on the tool will
not speed up the drilling. In fact, this excessive
pressure will only serve to damage the tip of your drill
bit, decrease the tool performance and shorten the
service life of the tool.
OPERATION
CAUTION: Always use the side grip (auxiliary
handle) and firmly hold the tool by both side grip
and switch handle during operations.
Set the action mode changing knob to the
symbol.
Attach the chuck adapter to a keyless drill chuck to
which 1/2"-20 size screw can be installed, and then
install them to the tool. When installing it, refer to the
section “Installing or removing drill bit”.
► Fig.22: 1. Keyless drill chuck 2. Chuck adapter
CAUTION: Always make sure that the work-
piece is secured before operation.
► Fig.21
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ENGLISH